Murder in Three Acts is a British-American made-for-television mystery film of 1986 produced by Warner Bros. Television, featuring Peter Ustinov as Agatha Christie's detective Hercule Poirot.

Directed by Gary Nelson,[1] it co-starred Jonathan Cecil as Hastings, Tony Curtis, and Emma Samms.

It was Ustinov's third and last portrayal of Poirot on television, and fifth overall including the feature films that preceded the TV movies.

They go to a party at which the other guests include the writer Janet Crisp, the American actor Charles Cartwright, a clergyman called Babbington, Daisy Eastman and her daughter Egg, Dr Strange, and Ricardo Montoya.

A version made in 2010 in the Poirot series starring David Suchet restored the title "Three Act Tragedy", as well as reinstating Sir Charles Cartwright (played by Martin Shaw) as an English stage actor.